Messages in this thread | | | Date | Wed, 22 Oct 2008 16:13:54 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH -tip] x86: do_boot_cpu - check if we have ESR register |
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* Cyrill Gorcunov <gorcunov@gmail.com> wrote:
> We should touch ESR register if only we have it. > The patch fixes the problem mentoined here > > http://lkml.org/lkml/2008/10/17/147 > > Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> > CC: Glauber Costa <glommer@gmail.com>
> - apic_write(APIC_ESR, 0); > - apic_read(APIC_ESR); > + if (APIC_INTEGRATED(apic_version[phys_apicid])) { > + apic_write(APIC_ESR, 0); > + apic_read(APIC_ESR); > + }
i'm wondering - is the server there really that old, that it has no integrated lapic? I.e. it's an i486 SMP box or so? Or perhaps some other, weird SMP box?
Ingo
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